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Rather than representing the full waveform, or shape, of sound information in the way that most conventional, full-spectrum audio recordings in any application do, zero-crossing is a compact way of representing only the most prominent frequency in a recording by noting the points in time at which a sound wave has crossed a reference amplitude a certain number of times.
Because the zero-crossing format is only able to represent one frequency at a time, full-spectrum is particularly preferable for recording multiple sources of sound simultaneously, such as multiple bats vocalizing in the same area, or a single bat in a noisy environment.
Wildlife Acoustics, Inc.
3 Mill and Main Place, Suite 110
Maynard, MA 01754-2657 USA
+1 (978) 369-5225
+1 (888) 733-0200